Allegany County, MD

245 public highway bridges

Allegany County Bridge Snapshot

Allegany County, Maryland contains 245 public highway bridges in the FHWA National Bridge Inventory. Roughly 30.6% are rated “Good,” 46.9% “Fair,” 6.1% “Poor,” and 6.1% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in MD are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

245

Total Bridges

30.6%

Good

6.1%

Poor

6.1%

Structurally Deficient

Condition Distribution

Good

30.6% (75)

Fair

46.9% (115)

Poor

6.1% (15)

SD

6.1% (15)

All Bridges (245)

Sort:

US 220

Over: MD 135A

0.43 MI N OF MD 135B, Allegany, MD

Built 1952 ADT: 2,120

US 220

Over: N POTOMAC RIVER, MD 135

0.42 MILE EAST OF MD 135A, Allegany, MD

Built 2012 ADT: 6,572

IS 68 EB

Over: MD 948AO, FLINTSTONE CRK

0.12 MILE NORTH OF MD 144, Allegany, MD

Built 1990 ADT: 1,320

IS 68 WB

Over: MD 948AO, FLINTSTONE CRK

0.12 MILE NORTH OF MD 144, Allegany, MD

Built 1990 ADT: 1,320

MD 952

Over: IS 68

0.03 MI S OF MD 952A, Allegany, MD

Built 1962 ADT: 30,249

IS 68

Over: US 40 ALT AND MD 639

0.15 M W OF PINE AVE, Allegany, MD

Built 1964 ADT: 8,091

ORLEANS R0AD

Over: IS 68

1.45 M W OF BR NO 0112900, Allegany, MD

Built 1968 ADT: 15,460

MOUNTAIN ROAD

Over: IS 68

1.08 M E OF BR NO 0113000, Allegany, MD

Built 1968 ADT: 18,970

IS 68

Over: PATTERSON AVENUE

0.54 MI E OF US 220, Allegany, MD

Built 1968 ADT: 204

FLETCHER DRIVE

Over: IS 68

0.1 MILE EAST OF US 220, Allegany, MD

Built 1968 ADT: 47,770

IS 68

Over: US 220

4.72 M S OF MD 144, Allegany, MD

Built 1968 ADT: 13,601

IS 68

Over: MD 658

0.73 MI E OF MD 53, Allegany, MD

Built 1968 ADT: 12,671

IS 68 EB

Over: MD 936

0.42 M N OF KERR ROAD, Allegany, MD

Built 1972 ADT: 1,502

IS 68 WB

Over: MD 936

0.42 M N OF KERR ROAD, Allegany, MD

Built 1972 ADT: 1,502

IS 68

Over: MD 736 (MIDLOTHIAN ROAD)

0.27 M S OF BRADDOCK ST, Allegany, MD

Built 1972 ADT: 4,531

IS 68

Over: MD 736 (MIDLOTHIAN ROAD)

0.27 M S OF BRADDOCK ST, Allegany, MD

Built 1972 ADT: 4,531

IS 68 EBR

Over: MD 55

0.25 MILE W OF US 40 ALT, Allegany, MD

Built 1973 ADT: 2,552

IS 68

Over: MD 55

1.53 MI E OF MD 36, Allegany, MD

Built 1973 ADT: 2,552

MD 36

Over: IS 68

1.53 MILES WEST OF MD 55, Allegany, MD

Built 1972 ADT: 26,410

IS 68 EBR

Over: MD 53

.19 MILE SOUTH OF US 4OAL, Allegany, MD

Built 1971 ADT: 12,262

IS 68 WBR

Over: MD 53

.19 MILE SOUTH OF US 4OAL, Allegany, MD

Built 1971 ADT: 12,262

WAVERLY STREET

Over: MD 36

0.44 MILE NORTH OF MD 135, Allegany, MD

Built 1975 ADT: 4,290

MD 948Y

Over: IS 68

0.4 M W OF WASHINGTON CO, Allegany, MD

Built 1988 ADT: 19,950

US 40 SCN

Over: IS 68

.3 M E OF SNIB HOLLOW RUN, Allegany, MD

Built 1988 ADT: 15,460

MD 948AL

Over: IS 68

1.27 MI E OF US 40 SC, Allegany, MD

Built 1990 ADT: 18,970

US 40 SCN

Over: IS 68

.5 M E OF FIFTEEN MILE CR, Allegany, MD

Built 1990 ADT: 18,400

MD 144

Over: IS 68 & PRATT HOLLOW

.1 M W OF FIFTEEN MILE CR, Allegany, MD

Built 1999 ADT: 18,551

POLISH MTN SERVICE

Over: IS 68

1 M W/OLD CUMBERLAND RD, Allegany, MD

Built 1990 ADT: 18,551

OLD CUMBERLAND RD

Over: IS 68

2.2 MI E CHANEYSVILLE RD, Allegany, MD

Built 1990 ADT: 18,551

MD 144

Over: IS 68

0.46 M E OF BR NO 0114700, Allegany, MD

Built 1990 ADT: 19,030

MD 144

Over: IS 68

0.46 M W OF BR NO 0114600, Allegany, MD

Built 1990 ADT: 17,860

MD 948AD

Over: IS 68

1.3 M E OF BR NO 0115100, Allegany, MD

Built 1990 ADT: 17,860

MD 948AE

Over: IS 68,ELK LICK RUN

1.36 MI E OF MD 144, Allegany, MD

Built 1990 ADT: 21,600

IS 68 EBR

Over: MD 144, ELK LICK RUN

0.18 M E/CEDAR KNOLL LN, Allegany, MD

Built 1990 ADT: 1,121

IS 68 WBR

Over: MD 144, ELK LICK RUN

0.18 M E/CEDAR KNOLL LN, Allegany, MD

Built 1990 ADT: 1,121

MD 948AF

Over: IS 68

0.86 M W OF BR NO 0115400, Allegany, MD

Built 1990 ADT: 21,600

MD 144

Over: IS 68

0.49 M E OF BR NO 0103000, Allegany, MD

Built 1990 ADT: 21,600

US 220

Over: I-68 AND MD 144 RAMP

0.13 M W OF ALI GHAN ROAD, Allegany, MD

Built 1999 ADT: 26,680

BDFRD/FREDRICK STS

Over: QUEEN CITY DR & US 40ALT

FREDERICK ST @ US 40ALT, Allegany, MD

Built 1977 ADT: 17,300

MARION STREET

Over: IS 68

0.23 MI W OF MD 639, Allegany, MD

Built 1968 ADT: 30,530

SPRING GAP ACCESS

Over: C&O CANAL

0.1 miles from Spring Gap, Allegany, MD

Built 1969 Load: 15.4 t ADT: 72

SLABTOWN ROAD

Over: UNNAMED STREAM

0.40 MI NE OF MD 36, Allegany, MD

Built 1991 Load: 15.9 t ADT: 258

WINDY RIDGE DRIVE

Over: JENNINGS RUN

1.3 MI W OF MD 35, Allegany, MD

Built 1959 Load: 20.0 t ADT: 10

US 220

Over: TRIB TO NORTH BR POTOMAC

1.46 MI N OF MD 830A, Allegany, MD

Built 1929 Load: 20.4 t ADT: 7,111

PARADISE STREET

Over: NEFF RUN

0.14 MI S OF MD 36, Allegany, MD

Built 1994 Load: 20.9 t ADT: 920

US 40 SCN

Over: FIFTEEN MILE CREEK

0.19 M E OF BR NO 0113300, Allegany, MD

Built 1917 Load: 21.3 t ADT: 281

MAIN ST-LONACONING

Over: GEORGES CREEK

0.02 MI E OF MD 36, Allegany, MD

Built 1957 Load: 21.8 t ADT: 153

MASON ROAD

Over: EVITTS CREEK

1.26 MI N OF ZEMBOWER RD, Allegany, MD

Built 1950 Load: 22.2 t ADT: 219

MD 636

Over: WARRIOR RUN

0.27 MI E OF MD 53, Allegany, MD

Built 1936 Load: 25.4 t ADT: 8,071

MD 658

Over: BRADDOCK RUN

0.11 MI N OF US 48, Allegany, MD

Built 1968 Load: 25.4 t ADT: 11,250

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 5, 2026